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<Title>ContourLayer.setSmoothInterpolation</Title>
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<p class="heading0">ChartDirector 7.0 (Java Edition)</p>
<p class="heading1"><a href="ContourLayer.htm">ContourLayer</a>.<wbr>setSmoothInterpolation</p>
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<p class="heading2a">Usage</p>
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public void setSmoothInterpolation(boolean b)
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<p class="heading2">Description</p>
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Sets whether to use spline or bilinear/linear surface interpolation.<br><br>
The data points for the contour layer are samples of the z values at certain gridded or scattered (x, y) points. However, to draw the contour and to color the layer, it is necessarily to know the z values at all pixels in the xy plane. ChartDirector uses surface interpolation to compute the z values at all pixels from the given data points.<br><br>
In spline surface interpolation, ChartDirector will compute a smooth surface that passes through all data points. In bilinear/linear surface interpolation, ChartDirector will use the data points to partition the (x, y) plane into rectangular or triangular regions, and will fit bilinear or linear surfaces to the regions.<br><br>
Spline surface interpolation generally produces smoother contours and is the default.
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<p class="heading2">Arguments</p>
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<th width="19%">Argument</th><th width="19%">Default</th><th>Description</th>
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<td>b</td><td>(Mandatory)</td><td>A true value means to use spline surface interpolation. A false value means to use bilinear/linear surface interpolation.</td>
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<p class="heading2">Return Value</p>
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None
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